[1] Univ Napoli Federico II, Dipartimento Sci Biomed Avanzate, Via S Pansini 5, I-80131 Naples, Italy
[2] IRCCS, Ctr Cardiol Monzino, Milan, Italy
[3] Univ Milan, Dipartimento Sci Clin Comunitk, Milan, Italy
[4] Univ Tor Vergata, Dipartimento Med Sistemi, Rome, Italy
[5] UOC Cardiol Clin, Padua, Italy
[6] Policlin Univ, UO Cardiol, Bari, Italy
[7] Magna Graecia Univ Catanzaro, Ist Cardiol, Dipartimento Sci Med & Chirurg, Catanzaro, Italy
[8] Fdn Policlin Tor Vergata, UOC Cardiol, Rome, Italy
[9] Univ Spedali Civili, UOC Cardiol Day Hosp, Brescia, Italy
[10] Azienda Osped Univ Maggiore Caritk, UO Cardiol, Novara, Italy
[11] IRCCS Osped Policlin San Martino, Malattie Cardiovasc, Genoa, Italy
[12] Univ Trieste, Azienda Sanitaria Univ Giuliano Isontina ASUGI, Dipartimento Cardiotoracovasc, Trieste, Italy
[13] Sapienza Univ Roma, Policlin Umberto 1, Dipartimento Sci Cardiovasc Resp, Roma, TX USA